Answer:
-x+y
Step-by-step explanation:
-1*(x-y)=-x+y
Answer:
1.425.
Step-by-step explanation:
1 .425 is the only one which can be written as a fraction ( 1425/ 1000).
π is a non repeating decimal which goes on without bounds.
So is √50 (try entering it on your calculator).
√-4 : there is no real number whose square root is negative.
1
a and d are supplementary angles, forming a line or adding to 180 degrees, so
d =180 - 120 = 60 degrees
2
f and h are called vertical angles, which are congruent.
h=70 degrees
3
c and f are supplementary. I think they're called consecutive angles.
f = 180 - c = 70 degrees
4
b and c are supplementary, c and g are congruent so
g = 180 - b = 120 degrees
Answer:
(4x+9)-(16x+9) = 4x+9-16x-9
= -12x
